Mini SAS & SATA: Key to Increasing Performance without Increasing Cost

Mini SAS and SATA are the standard connecting serial protocols that meet the current enterprise solution of mass data transfer and storage. They reliably perform to the demanding requirements of high speed data storage, offering more reliability and data integrity. In the past, most storage systems used the parallel bus interface. But serial technology has many advantages when compared to parallel technology. It allows the flow of data in single stream by wrapping bits of data into packets and has the capability to transfer many times faster than the parallel technique.

Mini SAS to SATA works as a successor to the older parallel SCSI and ATA technologies. SATA (Serial ATA) extends over the ATA (advanced technology attachment) by delivering 1.5G bps interconnection starting speed and integrates easily with the capabilities of SAS (serial attached SCSI). SAS improves in speed dramatically over SCSI (small computer system interface). SATA continues to make inroads with its low cost per gigabytes into networked storage systems, sub- entry servers or in desktop computers.  SAS offers the improved drive address ability up to 16,256 devices per port and expands the connectivity with the speed of 6G bps. This small connector is also supported in dual ported applications. Mini SAS allows the connectivity up to 128 physical links including host connections.

Connector signals of SATA are the subset of SAS signals, and this advancement supports the compatibility of SAS interface with lower cost SATA drives. SAS has become a universally accepted interconnection, so system builders can easily integrate either SAS or SATA devices depending on their customer’s specific requirement. This flexibility greatly expands the range of products a system builder can offer.

Reliable and High Performance: SCSI Terminator

A Terminator is an electric device which when placed at the end of a transmission line, prevents an electrical signal from being reflected back from the end. It is designed to match the impedance and minimizes signal reflection. A terminator is one of two types, either active or passive. The difference between the two lies in the fact that an active terminator consists of a voltage regulator and the passive one consists of simple resistors.

A SCSI Terminator must be designed and manufactured in such a way that it meets or exceeds the ANSI standards. The word SCSI is termed as small computer system interface and these terminators are used for those specific types of hard drives. These provide us a reliable signal with long cable runs of up to 6 meters along with increased data rates, satisfying us with high performance and reliability. The performance depends upon the way in which the resistors and diodes of a terminator work with each other resulting in balancing fluctuations that don’t match with the line impedance.

You can get a wide variety of such terminators including active, passive, single ended, High Voltage Differential (HVD), and Low Voltage Differential (LVD), such as Ultra2, Ultra 160, and Ultra 320. All have different specifications which makes it critical to choose the proper terminator for the specific SCSI bus application. And because a terminator is such a critical item for your high performance SCSI system, always try to buy the best quality product.

Understanding Mini SAS HD to SATA Cables/Connectors

Today, there is significant advancement in technology. Computers are the electronic devices that are used in all the places like homes, offices, workplaces and other industries. The important characteristics of computers are processing data, storage and cables for transmission of information. We use permanent and removable devices like hard disk, floppy, CD, DVD and USB drive for storing data.  There are various types of cables used for sending and receiving data. In networking, different cables are used to connect systems and to send or receive data.  In homes, a data cable is used to connect modems or routers with personal computers to access the internet.

Mini SAS HD and SATA are some of the cables that are used for sending and receiving data. One can search for them on the internet. You can also buy mini sas hd to sata breakout cables which includes SATA Data cable, Straight - Straight, 13 PIN SLIM SATA - 7 PIN SATA, STR/STR, 30AWG, RA/LA, 26AWG, STR/LA, 26AWG and more. All these products are available in different lengths. The Mini-SAS HD product range is a SAS based storage Input/output System that is used for the signal transmission of both SAS 2.1 and proposed SAS 3.0 industry standard protocols. They consist of both cables and connectors that cover the product definitions according to SFF-8643 and SFF-8644 standards. The internal board connectors are available with mounting brackets and external connectors offer complete 360 degree shielding in single, dual and quad port designs. Mini HD to SATA cables are used to connect host bus adapters to storage devices like optical and hard disk drives. The features of SATA are small cable size, affordable, fast data transfer through higher signaling rates, local hot swapping and well-organized transfer through an Input/output queuing protocol.

Mini SAS HD Cable and Adapters for Storage

The disk drive technologies have grown very rapidly in last the last years. This has resulted in the development of storage device with the capability in terabytes.
Some of the hard disk storage technologies commonly used are as follows:

1.    SCSI / SAS

2.    Fire wire

3.    ATA/SATA

4.    RAID and Fibre channel

The valid evolution of SCSI, that is SAS includes

1.    Long established software advantage

2.    Multi channel

3.    Dual port connection interfaces found in SCSI. 

SAS was defined to be the next generation of SCSI after Ultra 320. SAS would evolve to include and feature following key points:

1.    Features of the SCSI base command set

2.    Preempts and bypass Ultra 640

3.    Mainstream production began in 2004

4.    Multilane tiering

5.    Offered a cost sensitive and highly reliable product

6.    Universally supports SATA devices

7.    Targeted for mid range to high end servers

The current implementation of SAS offer data transfer rate in excess of 3Gbits/sec. The second generation of serial attached SCSI (SAS 2.0) increased the speed of the
interface up to 6Gbits/second and the third generation (SAS 3.0) will increase to 12Gbits/sec.

The mini SAS HD cable comes in external, internal, external-internal features and offers incredible flexibility for system builders.

The advantage of using SAS over older parallel technologies includes:

1.    Thinner cables

2.    Longer cable lengths

3.    Less bulky connectors

4.    Low cost serial interfaces (vs the hardware for parallel interfaces)

5.    Less cross talk (due to fewer conductors in the cable)

6.    Active Optical Cables (AOC) available for increased distances

SAS has become widespread data storage interface in servers that are on target to becoming a viable contender for external storage system. You can get these storage
devices online from the online stores exclusively providing these storage devices.

Mini-SAS HD Cables

The incredible growth of data in cloud and enterprise datacenters is driving the need for a higher performance storage interface to improve the ability of critical applications to access data. Mini-SAS HD (SFF-8644) cables meet this challenge, delivering the necessary performance to enable the full potential of PCI Express® 3.0-based systems and storage solutions.

Internal and external Mini-SAS HD cables are designed and built to meet the demanding 12Gb/s SAS-3 performance and density requirements. Available in 4 channel (4X) and 8 channel  (8X) configurations, Mini-SAS HD connectors (SFF-8644) double the port density of the original Mini-SAS connectors, while improving signal to noise ratio and reducing cross-talk.

Mini SAS HD cables are available in passive and active copper versions, as well as active optical for extended distance applications. A variety of alternate connector configurations are available, such as:

Mini-SAS HD to Mini-SAS

Mini-SAS HD to QSFP

Mini-SAS HD to SATA x 4

Mini-SAS HD to Mini-SAS HD x 4

Mini-SAS HD to Mini-SAS x 4

Mini-SAS HD to SAS drive x 4

This broad range of cable options ensures backward-compatibility with all of the SATA and SAS devices currently on the market.